基于微分变换策略的全离散间断Galerkin方法
High Order Discontinuous Galerkin Methods with Differential Transform Strategy
摘要: 在本文中,针对一维双曲守恒律方程,我们基于微分变换策略提出了一种高阶全离散间断Galerkin方法。与传统间断Galerkin方法相比较,该方法的主要特点为存储量较小,在时间上能够到达任意高阶精度。与ADER方法相比较,避免了复杂的Cauchy-Kowalewski步骤,同时程序编写简单。数值结果表明该方法具有高阶精度,针对间断解保持高分辨率。
Abstract: In this paper, based on the differential transform strategy, we introduce high order full discrete discontinuous Galerkin methods for one-dimensional hyperbolic conservation laws. Compared with the standard discontinuous Galerkin methods, the current methods enjoy the following advantages including low storage as well as keeping arbitrary high order accuracy in time. In comparison with the ADER methods, the resulting methods avoid the complicated Cauchy-Kowalewski procedure and the coding is easy at the same time. In addition, numerical results also indicate that the resulting methods enjoy genuine high order accuracy for smooth solutions, and keep steep discontinuity transition.
文章引用:于海燕, 王秀芳, 李刚. 基于微分变换策略的全离散间断Galerkin方法[J]. 应用数学进展, 2018, 7(5): 574-583. https://doi.org/10.12677/AAM.2018.75068

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